BOTANICAL STRUCTURES. 287 



economy mast be studied ; and in villa gardens the orna* 

 mental plant-house is very often attached to the library or 

 the drawing-room, or has a covered communication from 

 these apartments. A good plan for such a glazed house 

 may be found in the Gardeners Magazine, vol. vi., p. 

 664. 



Green-house Plants. — This beautiful class of plants has 

 become so numerous that in a sketch like the present it is 

 impossible to give the names of even a limited selection. 

 We may once more refer to Mr. Loudon's tables in his 

 Encyclojicedia of Horticulture, or to his still more copious 

 lists in the Hortus Britannicus, from both of which works 

 much valuable information on the subject may be obtained. 

 The recent increase of species makes the task of selection 

 at once more necessary and more difficult ; and it is one 

 which, it must be confessed, is often negligently performed. 

 Many of the finer sorts of woody plants are not propagated 

 without difficulty, and, consequently, being high-priced in 

 the nurseries, are found in requisite abundance only where 

 there is great liberality on the part of the proprietor. On 

 the other hand, the species which strike easily are circula- 

 ted by gardeners themselves, many of whom, by their own 

 interest and resources, more than half fill their green-houses 

 without calling for the pecuniary aid of their employers. 

 To this cause may be ascribed the perpetuation of many 

 mean-looking plants, which, if hardy, would scarcely be 

 tolerated in well-kept shrubberies, and certainly ought not 

 to encumber the green-house. 



Light mould produced by the rotting of turf taken from 

 pastures, and mixed with sand, if necessary, or enriched by 

 the addition of leaf-mould, is well adapted for most green- 

 house plants. Some require a mixture of peat-earth ; 



others thrive only in pure sandy peat. If more specifio 



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